Electrode for vacuum discharge devices.



H. J. NOLTE.

ELECTRODE FOR VACUUM DISCHARGE DEVICES.

APPLICATION FILED AUG. 7. I918.

1,294,69Q. Patented Feb. 18, 1919.

Fig. I

Inventor:

Henry J. nolma IENRY J. NOLTE, OF SCHENECTADY, NEW YORK, ASSIGNOB TO GENE ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

ELECTRODE FOB VACUUM DISCHARGE DEVICES.

Laeacsa.

Specification of Letters Patent.

Application filed August 7, 1918. Serial No. 248,701.

To all whom it may concern.-

Be it known that I, HENRY J. Non'rn, a citizen of the United States, residing at Schenectady, in the county of Schenectady, State of New York, have invented certain new and useful Improvements in Electrodes for Vacuum Discharge Devices, of whic the following is a specification.

My present invention relates to vacuum discharge devices and particularly to the construction of electrodes for such devices.

One particular form of apparatus in which my invention may be applied comprises an evacuated vessel containing an incandescent cathode in the form of a coiled filament, a grid in the form of a coil of wire surrounding the filament and a cylindrical anode surrounding the grid.

The specific object of my invention is to provide a simple and efficient manner for sup orting the anode of such a device so that it will always be maintained in the de sired special relation to the cathode and rid. The utility of my invention however 1s not limited to the particular device mentioned but it' may be used to advantage in. any form of vacuum discharge device employing a metallic electrode.

In carrying my invention into efi'ect in the present case, I provide two supporting arms for the anode located upon opposite sides of the cathode and grid. At each end of the anode, which takes the form of a thin metal cylinder, I form two narrow strips which are integral with the anode and extend from the surface thereof in diametrically opposite directions. These strips are of such length with relation to the distance between the supporting arms that the ends of the strips may be wound around the arms and welded thereto thus providing a secure attachment of the cylinder to the supporting arms.

My invention will best be understood by reference to the following description taken in connection with the accompanying drawing in which Figure 1 is a view of a completed pliotron in which my invention is employed; Fig. 2 is a view of a pliotron with the bulb and anode broken away; Fig. 3 is a view of the anode and Fig. 1 is a view of a metal sheet from which the anode is constructed showing the manner in which the supporting strips are cut away.

As indicated in the drawing the completed pliotron comprises an evacuated bulb 1 within which are located a cathode 2 in the form of a coiled filament, which is preferably of tungsten, a id 3 in the form of a coiled wire surroun ing the cathode and a cylindrical anode 4 surrounding the grid. Leading-in conductors 5 which are sealed through the stem 6 supply current to the cathode and leading-in conductors 7 which are also sealed through the stem 6 supply current to the grid. .The anode 4 is supported by two arms 8 and 9, both of which are sealed into the stem 6 and arm 8 ex tends through stem 6 and serves to 'carry the anode current. The leading-in conductors are connected to four terminals on the base 10, all of these terminals not appearing on the drawing.

The anode 4 is constructed of a rectangular sheet of metal 11, as shown in Fig. 4. From each side of this sheet strips of metal 12 and 13 are partly cut away in the manner indicated. The sheet is then bent into cylindrical form and the strips 12 and 13 are bent away from the cylinder so as to extend in diametrically opposite directions therefrom as indicated in Fig. 3. The ends of the strips are then wound around the supporting arms 8 and 9, as shown in Fig. 1, and welded thereto. The construction which I have described provides a simple and eflicient support for the anode and one which holds it rigidly in the desired position with respect to the cathode and grid.

While I have described thepreferred embodiment of my invention, I do not wish to be limited to the exact structure shown as it will be apparent that many modifications in the precise manner in which my invention is carried into efiect as well as in the device in which it is used may be made 2. In a vacuum discharge device a cylin-- drical electrode and means for supporting said-electrode consisting of a pair of support- Patented Feb.1@,191@.

' the wa ing arms and a sa d electrode an opposite directions therefrom, the ends of said strips being wound around the supporting arm. In' a tracuuni discharge device, a cyhndrical anode and means for supporting s a1d anode consisting-of a pair of sup ortmg arms and a pair of strips-integral with said anode at each end thereof and extending 1n diametrically opposite directions therefrom,'the ends of said strips being wound around the supporting arms and Welded thereto.

4. The combination in a vacuum discharge device of an evacuated receptaclecontaining a filamentary cathode, an anode and a grid, alfair of supporting arms sealed Into withsaid anode and extending IllOPPOSltB directions therefrom,

the ends of said stripsbeing secured to the supporting arms.

he combination in a vacuum discharge- ;.dev1ce of, an evacuated receptacle containing a filamentary cathode a? cylindrical anode and a grid, apair-of supporting arms sealed into the wail of said receptacle, and a pair Jof metal strips integral tail of strips inte a re With and extending in dlametrically opposite di: an

extending in diametrically I 'bein into the wal ofsaid receptacle and a pair of metal strips integral meant rections therefrom, the ends of said strips wound around the supporting arms.

The combination in: a vacuum discharge device of an evacuated receptacle containin a filamentary cathode, a grid and a cylindrisupportin .arms sealed of said receptac e, and a pair cal anode, a air of said anode of metal strips integral with in diametrically opposite dlrec extending tions from each end thereof, the ends of 4 said strips being wound around the supporting arms. i

7. The combination in a vacuum discharge device of an evacuated receptacle containing a filamentary cathode,-a'cylindrical anode and a grid, leading-in wiresfor'said electrodes and supporting arms for said anode sealed into a single stem projecting into said receptacle and a pair of metal stri s,

integral with said anode extending in d1a 50 metrically opposite directions from each end thereof, the ends of said strips being secured to said supporti In witness whereof, I my hand this 5th dig of August, 1918.

arms.

ENRY J. NOLTE. f'

with said anode ave hereunto set 

